Description

? Lifting Sub is the special tool in the drilling of petroleum, natural gas and geology exploration.
? Integral-structure lifting sub can be divided into two types: Type B with *0?shoulder. Customers can choose them according to the structure of the elevator. All threads conform to API standard.
? Function: be used to lift drill collar and other special drills.
? Features: easy for operating, safe and reliable for lifting drills.
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